Coral

Precious coral (Corallium rubrum and related species) is not a stone but the skeletal remains of colonial marine organisms that build elaborate branching structures in the deep Mediterranean and Pacific oceans. The rich red of Mediterranean coral — the most prized variety — comes from carotenoid pigments in the polyps. Coral has been used as a gemstone and protective charm since prehistoric times: carved coral fragments appear in Neolithic European graves, and ancient Romans hung red coral around children's necks to protect them from the Evil Eye, illness, and drowning.

In Hindu tradition, coral is the gem of Mars (Mangal), worn to strengthen Martian energy — physical courage, competitive drive, and the ability to cut through obstacles. Coral rings prescribed by Jyotish astrologers are worn on the ring finger of the right hand set in gold. In Italian folk tradition, red coral amulets (cornicello, or horn-shaped coral) were the most powerful protection against the Evil Eye and malocchio. Neapolitan craftspeople have made coral jewellery for over 500 years in the town of Torre del Greco.

As coral reefs face existential threat from ocean acidification and warming, coral charms carry an additional contemporary meaning: a reminder of what is precious, irreplaceable, and in need of our protection. Ethical coral sourcing — including antique coral, fossil coral, and farmed alternatives — is increasingly important to maintain the ecological integrity that makes the ocean's blessings possible.